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LTC3619IDD#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22
LTC3619
4
3619fa
Typical perForMance characTerisTics
T
A
= 25°C, V
IN
= 5V, unless otherwise noted.
Burst Mode Operation
Efficiency vs Input Voltage
(Channel 2)
Regulated Voltage
vs Temperature
Oscillator Frequency
vs Temperature
Supply Current vs Temperature
Switch Leakage vs Input Voltage
Switch On-Resistance
vs Input Voltage
Switch On-Resistance
vs Temperature
2µs/DIV
SW
2V/DIV
V
OUT
100mV/DIV
AC-
COUPLED
I
L
100mA/DIV
3619 G01
V
IN
= 5V
V
OUT
= 3.3V
I
LOAD
= 25mA
TEMPERATURE (°C)
–50
0
SUPPLY CURRENT (µA)
20
40
60
80
100
–25
250 50 75
3619 G02
100 125
V
IN
= 5V
V
IN
= 2.7V
I
LOAD
= 0
RUN1 = RUN2 = V
IN
INPUT VOLTAGE (V)
3.5
30
EFFICIENCY (%)
40
50
60
80
90
70
100
4
4.5
3619 G02
5 5.5
V
OUT
= 3.3V
I
OUT
= 1mA
I
OUT
= 10mA
I
OUT
= 100mA
I
OUT
= 800mA
TEMPERATURE (°C)
–50
–1.5
V
FB
ERROR (%)
–1.0
–0.5
0
1.0
0.5
1.5
50250–25
75
3619 G04
100 125
TEMPERATURE (°C)
–50
1.8
FREQUENCY (MHz)
1.9
2.0
2.1
2.3
2.4
2.2
2.5
–25
7550250
3619 G05
100 125
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
V
IN
= 5V
V
IN
(V)
2.5
0
LEAKAGE CURRENT (pA)
200
400
600
800
1000
4.543.53
3619 G06
5
MAIN SWITCH
SYNCHRONOUS SWITCH
5.5
CHANNEL 1
CHANNEL 2
V
IN
(V)
2.5
0.20
R
DS(ON)
(Ω)
0.25
0.30
0.35
0.40
0.45
0.50
0.55
0.60
0.65
4.543.53
3619 G07
5 5.5
MAIN SWITCH
SYNCHRONOUS SWITCH
6
CHANNEL 1
CHANNEL 2
TEMPERATURE (°C)
–50
0.2
R
DS(ON)
(Ω)
0.3
0.4
0.5
0.6
0.7
0.8
50250–25
3619 G08
75 100
CHANNEL 1
SYNCHRONOUS SWITCH
125
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 5V
MAIN SWITCH
Switch On-Resistance
vs Temperature
TEMPERATURE (°C)
–50
–0.1
PFET R
DS(ON)
(Ω)
NFET R
DS(ON)
(Ω)
0
0.1
0.2
0.3
0.4
0.5
0.1
0.2
0.3
0.4
0.5
0.6
0.7
50250–25
3619 G09
75 100
CHANNEL 2
(NFET)
SYNCHRONOUS SWITCH
125
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 5V
(PFET)
MAIN SWITCH
LTC3619
5
3619fa
Typical perForMance characTerisTics
T
A
= 25°C, V
IN
= 5V, unless otherwise noted.
Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current
Efficiency vs Load Current Load Regulation (Channel 1)
Load Regulation (Channel 2)
Line Regulation
OUTPUT CURRENT (A)
0.0001
0
EFFICIENCY (%)
10
20
30
40
80
70
60
50
90
100
0.010.001
3619 G10
0.1
V
OUT
= 3.3V
CHANNEL 1
1
V
IN
= 3.6V
V
IN
= 4.2V
V
IN
= 5V
OUTPUT CURRENT (A)
0.0001
0
EFFICIENCY (%)
10
20
30
40
80
70
60
50
90
100
0.010.001
3619 G11
0.1
V
OUT
= 3.3V
CHANNEL 2
1
V
IN
= 3.6V
V
IN
= 4.2V
V
IN
= 5V
OUTPUT CURRENT (A)
0.0001
0
EFFICIENCY (%)
10
20
30
40
80
70
60
50
90
100
0.010.001
3619 G12
0.1
V
OUT
= 1.2V
CHANNEL 1
1
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
V
IN
= 5V
OUTPUT CURRENT (A)
0.0001
0
EFFICIENCY (%)
10
20
30
40
80
70
60
50
90
100
0.010.001
3619 G13
0.1
V
OUT
= 1.2V
CHANNEL 2
1
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
V
IN
= 5V
LOAD CURRENT (mA)
0
–2.0
V
OUT
ERROR (%)
–1.0
–1.5
–0.5
0
1.0
0.5
2.0
1.5
300200100
3619 G14
400
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
LOAD CURRENT (mA)
0
–2.0
V
OUT
ERROR (%)
–1.0
–1.5
–0.5
0
1.0
0.5
2.0
1.5
600400200
3619 G15
800
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
V
IN
(V)
2.5
–0.6
V
OUT
ERROR (%)
–0.2
–0.4
0
0.4
0.2
0.6
5.04.54.03.53.0
3619 G16
5.5
V
OUT
= 1.8V
I
LOAD
= 100mA
LTC3619
6
3619fa
Typical perForMance characTerisTics
T
A
= 25°C, V
IN
= 5V, unless otherwise noted.
Average Input Current Limit
vs Temperature
Load Step (Channel 1) Load Step (Channel 1)
TEMPERATURE (°C)
–50
–8
I
INLIM
ERROR (%)
–4
–2
–6
0
6
4
2
8
75 10050250–25
3619 G19
125
V
IN
= 5V
I
LIM
= 475mA
20µs/DIV
V
OUT
200mV/DIV
AC-COUPLED
I
L
500mA/DIV
I
LOAD
500mA/DIV
3619 G20
V
IN
= 5V,V
OUT
= 3.3V
I
LOAD
= 0A TO 400mA
C
L
= 4.7µF
20µs/DIV
V
OUT
200mV/DIV
AC-COUPLED
I
L
500mA/DIV
I
OUT
500mA/DIV
3619 G21
V
IN
= 5V, V
OUT
= 3.3V
I
LOAD
= 40mA TO 400mA
C
L
= 4.7µF
Start-Up from Shutdown
Start-Up from Shutdown
(Channel 2)
200µs/DIV
RUN
2V/DIV
V
OUT
1V/DIV
I
L
500mA/DIV
3619 G17
V
IN
= 5V, V
OUT
= 3.3V
R
LOAD
= 7Ω
C
LOAD
= 4.7µF
2ms/DIV
RUN
2V/DIV
V
OUT
1V/DIV
R
LIM
1V/DIV
I
IN
500mA/DIV
3619 G18
V
IN
= 5V, V
OUT
= 3.4V
R
L
= NO LOAD, C
L
= 4.4mF
C
LIM
= 2200pF, I
LIM
= 500mA
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LTC3619IDD#PBF

Mfr. #:
Buy LTC3619IDD#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 400mA/800mA Synchronous Step-Down DC/DC Converter with Average Input Current Limit
Lifecycle:
New from this manufacturer.
Delivery:
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